Thanks Elevatorfella and all. (somehow my reply earlier to all didnt post)

I did end up replacing the rectifier (even though volts was at 45) and the Cap. (Also the CSDL switch was bad.) Job running OK now.

Interesting note/ observation - on the original setup every time I applied 120VAC via the L2 input wire I'd get a metallic / Buzz momentarily noise from below the chassis. With the new components no more.